A Total Variation Model Based on the Strictly Convex Modification for Image Denoising

Figure 3

Lena image (300×300). (a) Original image. (b) Noisy image corrupted by Gaussian noise for 𝜎=30. (c) Our algorithm by PMS; 𝜏=0.2 (122 steps). (d) Our algorithm by AOS scheme; 𝜏=2 (7 steps). (e) PM method; 𝐾=12 and 𝜏=0.25 (60 steps). (f) TV method; 𝜏=0.2 (149 steps). (g) D-𝛼-PM method; 𝜎₁=0.5, 𝜎=30, 𝜏=2, and 𝐾=4 (13 steps).

(a) Original image

(b) Noisy image

(c) Proposed model I (PMS)

(d) Proposed model I (AOS)

(e) PM model

(f) TV model

(g) D-𝛼-PM model